Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi quoc bo snippets" » "thu quoc bo snippets", "tai quoc bo snippets", "thi nuoc bo snippets", "thi quoc bao snippets", "thi quoc co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thi quoc bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi quoc bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi quoc bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi quoc bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.